Statement Of Financial Position [Abstract]
| Concept |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of financial position [abstract] | |||||||||||||||||||
| Assets [abstract] | |||||||||||||||||||
| Deferred tax assets | — | — |
79,000,000
SEK
|
— | — | — | — | — | — | — | — | — |
51,000,000
SEK
|
— | — | — | — | — | — |
| Cash and cash equivalents | — | — |
1 320
SEK
|
— | — | — | — | — | — | — | — | — |
1 200
SEK
|
— | — | — |
1 624
SEK
|
— | — |
| Assets | — | — |
17 963
SEK
|
— | — | — | — | — | — | — | — | — |
15 073
SEK
|
— | — | — | — | — | — |
| Equity and liabilities [abstract] | |||||||||||||||||||
| Equity [abstract] | |||||||||||||||||||
| Issued capital | — | — |
69,000,000
SEK
|
— | — | — | — | — | — | — | — | — |
69,000,000
SEK
|
— | — | — | — | — | — |
| Retained earnings | — | — |
9 415
SEK
|
— | — | — | — | — | — | — | — | — |
7 849
SEK
|
— | — | — | — | — | — |
| Share premium | — | — |
619,000,000
SEK
|
— | — | — | — | — | — | — | — | — |
619,000,000
SEK
|
— | — | — | — | — | — |
| Other reserves | — | — |
1 547
SEK
|
— | — | — | — | — | — | — | — | — |
596,000,000
SEK
|
— | — | — | — | — | — |
| Equity attributable to owners of parent | — | — |
11 650
SEK
|
— | — | — | — | — | — | — | — | — |
9 133
SEK
|
— | — | — | — | — | — |
| Non-controlling interests | — | — |
0
SEK
|
— | — | — | — | — | — | — | — | — |
0
SEK
|
— | — | — | — | — | — |
| Equity |
9 415
SEK
|
1 547
SEK
|
11 650
SEK
|
11 650
SEK
|
619,000,000
SEK
|
69,000,000
SEK
|
7 849
SEK
|
69,000,000
SEK
|
9 133
SEK
|
0
SEK
|
596,000,000
SEK
|
619,000,000
SEK
|
9 133
SEK
|
9 756
SEK
|
1 857
SEK
|
598,000,000
SEK
|
— |
7 232
SEK
|
69,000,000
SEK
|
| Liabilities [abstract] | |||||||||||||||||||
| Deferred tax liabilities | — | — |
602,000,000
SEK
|
— | — | — | — | — | — | — | — | — |
521,000,000
SEK
|
— | — | — | — | — | — |
| Equity and liabilities | — | — |
17 963
SEK
|
— | — | — | — | — | — | — | — | — |
15 073
SEK
|
— | — | — | — | — | — |